The book clearly explains and illustrates the mechanics of how Roman commanders - at every level - drew up and committed their different types of troops for open-field battles. It includes the alternative formations used to handle different tactical problems and different types of terrain; the possibilities of ordering and controlling different deployments once battle was joined; and how all this was based on the particular strengths of the Roman soldier. Covering the period of "classic" legionary warfare from the late Republic to the late Western Empire, Ross Cowan uses case studies of particular battles to provide a manual on how and why the Romans almost always won, against enemies with basic equality in weapon types - giving practical reasons why the Roman Army was the Western World's outstanding military machine for 400 years.

By 390 BC, the organization of the Roman army was in need of change. Fighting in the Greek-style with a heavy infantry was proving increasingly outdated and inflexible, resulting in the Roman's defeat at the hands of the Gauls at the battle of Allia. Following on from this catastrophe and in the next fifty years of warfare against Gallic and Italian tribes, a military revolution was born: the legion. This was a new unit of organization made up of three flexible lines of maniples consisting of troops of both heavy and light infantry. However, at the end of the 3rd century BC, Rome's prestige was shattered once more by the genius of Hannibal of Carthage, causing Roman battle tactics to be revised again. The legendary general Scipio Africanus achieved this, finally destroying the Carthaginian army at the climactic victory of Zama. A wholly new kind of soldier had been invented, and the whole Mediterranean world was now at Rome's feet. This book reveals these two defining moments in Roman military history and the revolution in battle tactics that was the result, examining how the Roman army eventually became all-conquering and all-powerful.

Between AD 69 and 161 the composition of the Roman legions was transformed. Italians were almost entirely replaced by provincial recruits, men for whom Latin was at best a second language, and yet the 'Roman-ness' of these Germans, Pannonians, Spaniards, Africans and Syrians, fostered in isolated fortresses on the frontiers, was incredibly strong. They were highly competitive, jealous of their honour, and driven by the need to maintain and enhance their reputations for virtus, that is manly courage and excellence. The warfare of the period, from the huge legion versus legion confrontations in the Civil War of AD 69, through the campaigns of conquest in Germany, Dacia and Britain, to the defence of the frontiers of Africa and Cappadocia and the savage quelling of internal revolts, gave ample opportunity for virtus-enhancing activity. The classic battle formation that had baffled Pyrrhus and conquered Hannibal was revived. Heroic centurions continued to lead from the front, and common legionaries vied with them in displays of valour. The legions of the era may have been provincial but they were definitely Roman in organisation and ethos.

The Roman army is recognised as one of the most effective fighting machines that the world has ever seen. However, the senior officer corps of the Roman army was essentially amateur, made up of aristocratic men pursuing political careers. What then was the secret of the Romans' success?Kate Gilliver provides the first comprehensive study of military theory - as well as practice - in the late Republic and early Empire. She draws not just on the ancient textbooks, but makes use of the other contemporary literary evidence and on the wealth of archaeological evidence for military activity.In five central chapters Dr Gilliver looks in detail at all aspects of the Roman army; at its organisation, the order of march, temporary encampments, pitched battles and siege warfare. These chapters reveal the army's very flexible organisation and skills, as well as it discipline.The book also contains a fine range of illustrations, an Appendix of all the key Roman military treatises and a full Glossary of key technical terms. The complete work will command a wide international readership, particularly among military historians, archaeologists and wargamers.

Drawn from a wide range of warlike peoples throughout the provinces, especially on the fringes of the empire, auxiliaries were generally not citizens of the Roman empire. The cavalry of the auxilia provided a powerful fighting arm; organized, disciplined and well trained, it was adept at performing both skirmish and shock action. This book details the many roles of the Roman auxiliary cavalryman, including reconnaissance, communication and policing duties, as well as in battle. Motivation for enlisting, conditions of service and experience of battle are all explored, and colour illustrations support the text.

Bonaparte's Grande Armée, one of the most renowned battle-winning machines in history, evolved from a merging of the professional army of the Ancien Régime and the volunteers and conscripts of the Revolutionary levée en masse – although the contribution of the former is often underestimated. A leading authority on the history of tactics draws here on original drill manuals and later writings to explain how the French infantry of 1792–1815 were organized for fire and movement on the battlefield. Illustrated with clear diagrams and relevant paintings and prints, and specially prepared colour plates, this text brings the tactical aspects of eight battles vividly to life.

The twilight of the Roman Empire saw a revolution in the way war was waged. The drilled infantryman, who had been the mainstay of Mediterranean armies since the days of the Greek hoplite, was gradually replaced by the mounted warrior. This change did not take place overnight, and in the 3rd and 4th centuries the role of the cavalryman was primarily to support the infantry. However, by the time of the 6th century, the situation had been completely reversed. Late Roman Cavalryman gives a full account of the changing experience of the mounted soldiers who defended Rome's withering western empire.